What's this?
It's a microphone.
What's this?
They are headphones.
What's this?
It's a keyboard.
What's this?
It's a computer.
What's this?
It's a scanner.
What's this?
It's a mouse.
What's this?
It's a printer.
What's this?
It's a screen.
What's this?
It's a speaker.
What's this?
It's a tower.